28520798 has 16 divisors (see below), whose sum is σ = 45398880. Its totient is φ = 13391616.

The previous prime is 28520773. The next prime is 28520809. The reversal of 28520798 is 89702582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24698 + ... + 25826.

It is an arithmetic number, because the mean of its divisors is an integer number (2837430).

Almost surely, 2^28520798 is an apocalyptic number.

28520798 is a deficient number, since it is larger than the sum of its proper divisors (16878082).

28520798 is a wasteful number, since it uses less digits than its factorization.

28520798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 28520798 is about 5340.4866819420. The cubic root of 28520798 is about 305.5300217022.

The spelling of 28520798 in words is "twenty-eight million, five hundred twenty thousand, seven hundred ninety-eight".